Drifting Continents


Vocabulary


Continental drift: Alfred Wegener's theory that the continents were once connected and broke apart and floated where they are today.
Fossil: A trace of an ancient organism that has been preserved in rock.
Pangaea: The continent that was made of all the continents.

Outline


Continental Drift:

  • once super continent called pangaea
    • evidence: landforms, fossils, and climate

Landforms:

  • land fits like a puzzle
    • mountain ranges and fields line up and fit

Fossils:

  • Animals that lived in one part of Pangaea lived in another part of Pangaea
    • Continents split leaving the two fossils in two different continents
      • animals like mesosaurus and lystrosaurus
      • also Glossopteris fossil found in Africa, South America, Australia, India, and Antarctica

Climate:

  • Found Plant fossils that live in hot places in a cold area
    • in island Spitsbergen (now very cold) scientists found warm climate living plants
      • Spitsbergen was near the equator
  • Scientists found that Antarctica once had glaciers.

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